ATTEMPTED DIVISION OF BRITISH INSECTS. 385 



StIRPS. — TiNEINA. 



Natural Order. — Yponomeutites, Ermine-moths. 



Larva elongate, slightly hairy, with ten prehensile feet; gregarious, 

 spinning a web ; if touched, runs backwards, falls and suspends 

 itself by a thread. Pupa elongate, smooth ; changes in a cocoon 

 amongst its food. Imago with filiform antennae ; wings folded 

 round the body, often beautifully dotted and marked with black. 

 Yponomeuta, and neighbouring genera. 



Natural Order. — Tortricites, Bell-moths. 



Larva more obese than the foregoing, slightly hairy, with ten pre- 

 hensile feet ; gregarious, spinning a web ; if touched, runs back- 

 wards with a rapid twisting motion, and falls, hanging by a thread. 

 Pupa elongate, attached by the tail; changes in a silken cocoon, 

 generally amidst the web of the larva. Imago with filiform 

 antennas ; the fore M-ings with a prominent shoulder, which gives 

 the insect, when at rest, precisely the shape of a bell. Tortrix, 

 and allied genera. 



Natural Order. — Tineites, Clothes-moths, &c. 



Larva elongate, with ten prehensile legs; concealed in a sack con- 

 structed by itself, which it enlarges from time to time as it 

 increases in bulk ; feeds on woollen cloths, hair, and decayed 

 animal and vegetable substances. Pupa elongate ; changes within 

 the sack. Imago with filiform antennas, and narrow wings ; 

 flight gregarious, rising and falling. Tinea, and allied genera. 



Natural Order. — Alucitites, Plume-moths. 



Larva slender, with ten prehensile feet ; the anterior part capable of 

 great attenuation and extension, in the manner of a leech. Pupa 

 elongate ; changes in a silken cocoon. Imago with filiform an- 

 tennae ; wings extended at right angles with the body ; very 

 narrow, and divided to the base, each division having the appear- 

 ance of a perfect and distinct feather. Pterophorus, Alucita. 



Natural Order. — Pulicites, Fleas. 



Class IL — Diptera. 



Larva with minute but corneous mandibles, moving horizon- 

 tally; without articulate or prehensile feet; feeds en recent or 



NO. IV. VOL. II. O D 



